| Status | Description | Organism | Genes | References |
|---|---|---|---|---|
| allantoinase | Acetobacter aceti | G10B5-320 | ||
| allantoinase | Agrobacterium albertimagni | G10FL-2149 | ||
| allantoinase | Arthrobacter arilaitensis | allB | ||
| allantoinase | Achromobacter arsenitoxydans | G10BD-3262 | ||
| allantoinase | Arthrobacter aurescens | allB | ||
| allantoinase | Acidovorax avenae | GHRD-860 | ||
| allantoinase | Acinetobacter baumannii | pyrX | ||
| allantoinase | Azorhizobium caulinodans | GJF3-3942 | ||
| allantoinase | Arthrobacter chlorophenolicus | GH1A-3453 | ||
| dihydroorotase, multifunctional complex type | Anabaena cylindrica | G12Z9-792 |